Name

portmap − DARPA internet port to RPC program number mapper

Syntax

/usr/etc/rpc.portmap

Description

The portmap daemon converts RPC program numbers into DARPA protocol port numbers. When an RPC server starts, it tells the portmap daemon what TCP or UDP port number it is listening on, and what RPC program numbers it can serve.

The portmap daemon must be invoked before attempting to run any RPC service. It must be running in order to use any RPC-based applications, including the NFS mount daemon, mountd(.). When a client makes an RPC call to a given program number, the RPC program first contacts the portmap daemon on the server machine to determine the port number where the RPC packets will be sent.

The control file /etc/securenets specifies which YP clients are permitted to request maps.  You must configure the /etc/securenets file to reflect the domains where it is installed.  See the Release Notes for more information. 

If portmap crashes, you must restart all servers.

Files

/etc/securenets
Specifies which YP clients are permitted to request maps

See Also

rpcinfo(,), ypserve()